In Ding Dingue Dong, the French adaptation of Evil Under the Sun, Doctor Nathan Steiner was the husband of Marie Steiner and the parallel of Patrick Redfern from the original novel. Like Patrick, he found the body of his lover Clarisse / Arlena, which was confirmed by Marlène Leroy (by Emily Brewster in the original novel). Here however Adele Rodier didn't provide Nathan's wife an alibi. In the original novel Redfern had already killed Alice Corrigan but here there isn't mention of a previous murder.
Nathan Steiner was portrayed by Kevin Garnichat.